Years Ended March 31,
				2000	2001	2002
Cash Flows from Operating Activites
	Net income			$11,967,000	$13,222,000	$14,821,000
	Adjustments to reconcile net income to net cash provided by operating activities:
		Depreciation		6,965,000	6,759,000	8,414,000
		Deferred income taxes		(131,000)	303,000	(40,000)
		Loss on write down and (gain) on disposal of property and equipment		192,000	(45,000)	52,000
		Changes in operating assets and liabilities:
			Accounts receivable	(4,312,000)	1,558,000	1,276,000
			Prepaid expenses and taxes	(1,075,000)	(534,000)	1,166,000
			Accounts and taxes payable	(1,158,000)	(2,304,000)	426,000
			Accrued liabilities	1,050,000	4,657,000	(27,000)
			Other assets	(779,000)	149,000	488,000
	Net cash provided by operating activities			12,719,000	23,765,000	26,576,000
Cash Flows from Investing Activities
	Purchases of property and equipment			(6,240,000)	(10,154,000)	(10,876,000)
	Net cash used in investing activities			(6,240,000)	(10,154,000)	(10,876,000)
Cash Flows from Financing Activities
	Proceeds and tax benefits from exercise of stock options			3,078,000	4,150,000	2,681,000
	Purchase of common stock			(12,966,000)	(13,947,000)	(15,237,000)
	Net cash used in financing activities			(9,888,000)	(9,797,000)	(12,556,000)
Net increase (decrease) in cash and cash equivalents				(3,409,000)	3,814,000	3,144,000
Cash and cash equivalents at beginning of year				9,052,000	5,643,000	9,457,000
Cash and Cash Equivalents at End of Year				$5,643,000	$9,457,000	$12,601,000